EP2341106B1 - Composition durcissable et produit durci obtenu à partir de celle-ci - Google Patents

Composition durcissable et produit durci obtenu à partir de celle-ci Download PDF

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EP2341106B1
EP2341106B1 EP09816235.7A EP09816235A EP2341106B1 EP 2341106 B1 EP2341106 B1 EP 2341106B1 EP 09816235 A EP09816235 A EP 09816235A EP 2341106 B1 EP2341106 B1 EP 2341106B1
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acid
curable composition
polymer
composition according
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EP2341106A1 (fr
EP2341106A4 (fr
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Ayako Yano
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Kaneka Corp
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/71—Monoisocyanates or monoisothiocyanates
    • C08G18/718—Monoisocyanates or monoisothiocyanates containing silicon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/32—Polymers modified by chemical after-treatment
    • C08G65/329—Polymers modified by chemical after-treatment with organic compounds
    • C08G65/336—Polymers modified by chemical after-treatment with organic compounds containing silicon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
    • C08L71/02—Polyalkylene oxides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J171/00—Adhesives based on polyethers obtained by reactions forming an ether link in the main chain; Adhesives based on derivatives of such polymers
    • C09J171/02—Polyalkylene oxides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/08—Polyurethanes from polyethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2190/00—Compositions for sealing or packing joints
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/29—Compounds containing one or more carbon-to-nitrogen double bonds
    • C08K5/31—Guanidine; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C08L101/02—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
    • C08L101/10—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing hydrolysable silane groups

Definitions

  • the present invention relates to a curable composition
  • a curable composition comprising one or more organic polymers having a silicon-containing group which has a hydroxy group or hydrolyzable group bonded to a silicon atom and can form a siloxane bond to be cross-linked (hereinafter referred to also as a "reactive silyl group").
  • Organic polymers containing at least one reactive silyl group in the molecule are known to have properties such that they are cross-linkable by siloxane bond formation accompanied by reactions such as hydrolysis of a reactive silyl group due to moisture and the like, even at room temperature, to provide rubber-like cured products.
  • Curable compositions containing these reactive silyl group-containing organic polymers are cured with use of a silanol condensation catalyst.
  • the silanol condensation catalyst include organotin catalysts having a carbon-tin bond such as dibutyltin bis(acetylacetonate).
  • organotin compounds are known to be toxic, and the development of non-organotin catalysts has been desired.
  • Patent Documents 3, 4, 5, 6, and 7 disclose tin carboxylates and other carboxylate metal salts as silanol condensation catalysts. These documents also disclose that addition of an amine compound as a promoter improves curability. In consideration of the environmental load, catalysts containing substantially no metal have also been desired, and Patent Document 8 discloses that combination use of an amine compound and a carboxylic acid provides a metal-free silanol condensation catalyst.
  • Non-Patent Document 1 phosphorus compounds containing phosphorus having an oxidation number of +3 are widely used as stabilizers for organic materials and flame retardants. However, it has not been known that these compounds suppress crystallization which occurs when curable compositions including a silyl group-containing polymer are cured. Patent Document 9 discloses an antibacterial sealant composition prepared with use of a phosphorus compound having a specific structure. However, it has not been predictable that the compound suppresses crystallization mentioned above.
  • phosphorus plasticizers such as tricresyl phosphate are used for softening polyvinyl chloride and for providing sealants with flame retardance.
  • those plasticizers which are in a liquid form at room temperature namely, ones having a melting point of lower than 23°C are commonly used.
  • Non-Patent Document 1 Akisada Endo and Makoto Sudo, "Plastics Haigouzai: Kiso to Ouyou", Taiseisha Ltd., Nov. 30, 1996, pp. 90-91
  • the present inventor has found a problem that a curable composition containing a carboxylic acid/amine catalyst or a carboxylate metal salt/amine catalyst as a silanol catalyst gives a cured product on whose surface small crystalline particles occur a period of time after the curing. It has been known that crystallization is more likely to occur, in particular, when the amine compound as a promoter is a polyamine, especially diamine. However, it has been necessary to use a diamine to achieve a practical curing rate because a monoamine only provides a slow curing rate. Especially, a diamine having primary and tertiary amino groups provides a rapid curing rate. Hence, it has been necessary to use these compounds.
  • An object of the present invention is to provide a curable composition comprising an organic polymer having a reactive silyl group, which is free from organotin catalysts that are considered to be harmful to the environment and human bodies, has good surface curability and adhesiveness, and has a good surface condition after being cured.
  • the present inventor has made intensive studies to solve the above problems, and has found out that a phosphorus compound having a specific structure can suppress the crystallization on the surface of the cured product.
  • the present invention relates to:
  • the present invention provides a curable composition that has good curability and adhesiveness and has no crystals that occur on the surface after curing.
  • the main chain skeleton of the organic polymer (A) having a reactive silyl group according to the present invention is not particularly limited and various polymers having different main chain skeletons may be used.
  • the main chain skeleton preferably comprises at least one atom selected from a hydrogen atom, a carbon atom, a nitrogen atom, an oxygen atom, and a sulfur atom because the organic polymer (A) having such a main chain skeleton gives excellent curability and adhesiveness to the composition to be provided.
  • polyoxyalkylene polymers such as polyoxyethylene, polyoxypropylene, polyoxybutylene, polyoxytetramethylene, polyoxyethylene-polyoxypropylene copolymers, and polyoxypropylene-polyoxybutylene copolymers
  • hydrocarbon polymers such as ethylene-propylene copolymers, polyisobutylene, copolymers of isobutylene and isoprene or a like monomer, polychloroprene, polyisoprene, copolymers of isoprene or butadiene with acrylonitrile and/or styrene or a like monomer, polybutadiene, and copolymers of isoprene or butadiene with acrylonitrile and styrene or a like monomer, and hydrogenated polyolefin polymers derived from hydrogenation of these polyolefin polymers; polyester polymers obtained by condensation of a dibasic acid such as adip
  • saturated hydrocarbon polymers such as polyisobutylene, hydrogenated polyisoprene, and hydrogenated polybutadiene, polyoxyalkylene polymers, and (meth)acrylate ester polymers.
  • organic polymer (A) having such a main chain skeleton has a relatively low glass transition temperature and the cured product to be provided is allowed to have excellent cold resistance.
  • the glass transition temperature of the organic polymer (A) is preferably 20°C or lower, more preferably 0°C or lower, and particularly preferably -20°C or lower.
  • a glass transition temperature of higher than 20°C may cause a high viscosity of the composition in winter or in cold districts to lower workability, and may lower the flexibility of the cured product to lower the elongation property.
  • the glass transition temperature values are measured by a DSC.
  • Polyoxyalkylene polymers and (meth)acrylate ester polymers are particularly preferable because they are excellent in moisture permeability, depth curability when used for one-pack type compositions, and adhesiveness. Further, polyoxyalkylene polymers are most preferable. Among polyoxyalkylene polymers, polyoxypropylene polymers are particularly preferable.
  • the component (A) is an organic polymer having a reactive silyl group.
  • the component (A) of the present invention can provide a composition excellent in curability and adhesiveness, compared to inorganic polymers having main chain skeletons of, for example, polydimethylsiloxane.
  • the reactive silyl group contained in the organic polymer of the present invention is a group that has a hydroxy group or hydrolyzable group bonded to a silicon atom and is cross-linkable by siloxane bond formation as a result of a reaction accelerated by a silanol condensation catalyst.
  • Examples of the reactive silyl group include a group represented by the formula (2): -SiR 2 3-a X a (2) wherein R 2 s are each independently a C1 to C20 alkyl group, a C6 to C20 aryl group, a C7 to C20 aralkyl group, or a triorganosiloxy group represented by -OSi(R') 3 (R's are each independently a C1 to C20 hydrocarbon group); Xs are each independently a hydroxy group or a hydrolyzable group; and "a" is an integer of 1 to 3.
  • R 2 s are each independently a C1 to C20 alkyl group, a C6 to C20 aryl group, a C7 to C20 aralkyl group, or a triorganosiloxy group represented by -OSi(R') 3 (R's are each independently a C1 to C20 hydrocarbon group); Xs are each independently a hydroxy group or a hydrolyzable group;
  • the hydrolyzable group is not particularly limited, and may be any conventionally known hydrolyzable group. Specific examples thereof include a hydrogen atom, a halogen atom, an alkoxy group, an acyloxy group, a ketoxymate group, an amino group, an amido group, an acid amido group, an aminooxy group, a mercapto group, and an alkenyloxy group. Preferable among these are a hydrogen atom, an alkoxy group, an acyloxy group, a ketoxymate group, an amino group, an amido group, an aminooxy group, a mercapto group, and an alkenyloxy group. Particularly preferable is an alkoxy group as it contributes to mild hydrolysis and is easy to handle.
  • One silicon atom can have one to three groups selected from a hydrolyzable group or a hydroxy group bonded thereto. In the case that two or more groups selected from a hydrolyzable group or a hydroxy group are bonded to a silicon atom in the reactive silyl group, these groups may be the same as or different from each other.
  • the symbol "a” in the formula (2) is preferably 2 or 3 from the standpoint of curability.
  • R 2 in the formula (2) examples include: alkyl groups such as a methyl group and an ethyl group; cycloalkyl groups such as a cyclohexyl group; aryl groups such as a phenyl group; aralkyl groups such as a benzyl group; and triorganosiloxy groups represented by -OSi(R') 3 wherein R's are each a group such as a methyl group or a phenyl group.
  • a methyl group is particularly preferable.
  • the reactive silyl group examples include a trimethoxysilyl group, a triethoxysilyl group, a triisopropoxysilyl group, a dimethoxymethylsilyl group, diethoxymethylsilyl group, and a diisopropoxymethylsilyl group.
  • a trimethoxysilyl group, a triethoxysilyl group, and a dimethoxymethylsilyl group as they have high activity and contribute to good curability.
  • Particularly preferable is a trimethoxysilyl group.
  • a dimethoxymethylsilyl group is particularly preferable in terms of storage stability.
  • a triethoxysilyl group and a diethoxymethylsilyl group are particularly preferable because they produce ethanol as alcohol generated along with the hydrolysis reaction of the reactive silyl group, which means they have higher safety.
  • the reactive silyl group may be introduced by a conventionally known method. Examples thereof are listed below.
  • the method (I) or the method (III) in such a mode that a hydroxy group-terminated polymer is allowed to react with a compound having an isocyanate group and a reactive silyl group is preferable as a high conversion rate can be achieved in a relatively short period of time.
  • the method (I) is particularly preferable because the reactive silyl group-containing organic polymer produced by the method (I) is likely to provide curable compositions having a lower viscosity and thus better workability than those of curable compositions provided from the organic polymer produced by the method (III); and the organic polymer produced by the method (II) has a strong odor due to mercaptosilane.
  • hydrosilane compound to be used in the method (I) include, but are not limited to: halogenated silanes such as trichlorosilane, methyldichlorosilane, dimethylchlorosilane, and phenyldichlorosilane; alkoxysilanes such as trimethoxysilane, triethoxysilane, methyldiethoxysilane, methyldimethoxysilane, phenyldimethoxysilane, and 1-[2-(trimethoxysilyl)ethyl]-1,1,3,3-tetramethyldisiloxane; acyloxysilanes such as methyldiacetoxysilane and phenyldiacetoxysilane; and ketoxymatesilanes such as bis(dimethylketoxymate)methylsilane and bis(cyclohexylketoxymate)methylsilane.
  • halogenated silanes such as trichloro
  • halogenated silanes and alkoxysilanes are preferable.
  • alkoxysilanes are most preferable as they contribute to mild hydrolysis of a curable composition to be provided and are easily handled.
  • methyldimethoxysilane is preferable as it is easily available and contributes to high curability, storage stability, elongation property, and tensile strength of a curable composition containing an organic polymer to be provided.
  • trimethoxysilane from the standpoints of the curability and restorability of a curable composition to be provided.
  • An example of the synthesis method (II) is, but not particularly limited to, a method in which a mercapto group- and reactive silyl group-containing compound is introduced into an unsaturated-bond moiety of the organic polymer by radical addition reaction in the presence of a radical initiator and/or a radical generation source.
  • mercapto group- and reactive silyl group-containing compound include, but are not limited to, ⁇ -mercaptopropyltrimethoxysilane, ⁇ -mercaptopropylmethyldimethoxysilane, ⁇ -mercaptopropyltriethoxysilane, ⁇ -mercaptopropylmethyldiethoxysilane, mercaptomethyltrimethoxysilane, and mercaptomethyltriethoxysilane.
  • An example of the synthesis method (III) in which a hydroxy group-terminated polymer is allowed to react with an isocyanate group- and reactive silyl group-containing compound is, but not particularly limited to, a method disclosed in Japanese Kokai Publication H03-47825 .
  • isocyanate group- and reactive silyl group-containing compound include, but are not limited to, ⁇ -isocyanatopropyltrimethoxysilane, ⁇ -isocyanatopropylmethyldimethoxysilane, ⁇ -isocyanatopropyltriethoxysilane, ⁇ -isocyanatopropylmethyldiethoxysilane, isocyanatomethyltrimethoxysilane, isocyanatomethyltriethoxysilane, isocyanatomethyldimethoxymethylsilane, and isocyanatomethyldiethoxymethylsilane.
  • disproportionation may proceed in some cases. As the disproportionation proceeds, unstable compounds such as dimethoxysilane may be generated so as to show poor handleability. In the case of ⁇ -mercaptopropyltrimethoxysilane and ⁇ -isocyanatopropyltrimethoxysilane, however, such disproportionation will not proceed.
  • the synthesis method (II) or (III) is preferable in the case that a group in which three hydrolyzable groups are bonded to one silicon atom, such as a trimethoxysilyl group, is used as the silyl group.
  • R 3 s are each independently a hydrocarbon group, and are each preferably a C1 to C20 hydrocarbon group, more preferably a C1 to C8 hydrocarbon group, and particularly preferably a C1 to C4 hydrocarbon group from the standpoints of the availability and cost;
  • R 4 is a divalent organic group and is preferably a C1 to C12 divalent hydrocarbon group, more preferably a C2 to C8 divalent hydrocarbon group, and particularly preferably a C2 divalent hydrocarbon group from the standpoints of the availability and cost;
  • "m" represents an integer of 0 to 19 and is preferably 1 from the standpoints of the availability and cost.
  • the silane compound represented by the formula (3) is preferably used in the case of introducing a group in which three hydrolyzable groups are bonded to one silicon atom in the synthesis method (I).
  • Specific examples of the silane compound represented by the formula (3) include 1-[2-(trimethoxysilyl)ethyl]-1,1,3,3-tetramethyldisiloxane, 1-[2-(trimethoxysilyl)propyl]-1,1,3,3-tetramethyldisiloxane, and 1-[2-(trimethoxysilyl)hexyl]-1,1,3,3-tetramethyldisiloxane.
  • the reactive silyl group-containing organic polymer may have a linear or branched structure.
  • the number average molecular weight thereof is about 500 to 100,000, more preferably 1,000 to 50,000, and particularly preferably 3,000 to 30,000 as determined by GPC and expressed on the polystyrene equivalent basis. If the number average molecular weight is lower than 500, the cured product to be provided is likely to be poor in elongation property. If it is higher than 100,000, the curable composition to be provided is likely to have a high viscosity and be poor in workability.
  • the organic polymer may contain, on average, at least 1, and preferably 1.1 to 5, reactive silyl groups per polymer molecule for providing a rubber-like cured product having high strength, high elongation, and low elastic modulus. If the polymer contains, on average, less than one reactive silyl group in one molecule, the curability may be insufficient, which makes it difficult to provide a favorable rubber elastic behavior.
  • the reactive silyl group may be located at a main chain end, or at a side chain end, or at both ends, of the organic polymer chain. Particularly in the case that the reactive silyl group is located only at a main chain end of the molecular chain, the organic polymer component in the resulting cured product has an increased effective network size. Thus, a rubber-like cured product having high strength, high elongation, and low elastic modulus is likely to be provided.
  • the polyoxyalkylene polymer is essentially a polymer having a repeating unit represented by the formula (4): -R 5 -O- (4) wherein R 5 is a C1 to C14 linear or branched alkylene group.
  • R 5 in the formula (4) preferably represents a C1 to C14, more preferably C2 to C4, linear or branched alkylene group.
  • Specific examples of the repeating unit represented by the formula (4) include: -CH 2 O-, -CH 2 CH 2 O-, -CH 2 CH(CH 3 )O-, -CH 2 CH(C 2 H 5 )O-, -CH 2 C(CH 3 ) 2 O-, and -CH 2 CH 2 CH 2 CH 2 O-.
  • the main chain skeleton of the polyoxyalkylene polymer may comprise one kind of repeating unit, or two or more kinds of repeating units.
  • ones including a polymer that mainly contains a propylene oxide polymer are preferable as they are amorphous and have a comparatively low viscosity.
  • Examples of the method for synthesizing a polyoxyalkylene polymer include, but not particularly limited to: a polymerization method with an alkali catalyst such as KOH; a polymerization method with a transition metal compound-porphyrin complex catalyst such as a.complex produced by the reaction between an organoaluminum compound and porphyrin, as disclosed in Japanese Kokai Publication S61-215623 ; polymerization methods with a double metal cyanide complex catalyst, as disclosed in Japanese Kokoku Publications S46-27250 and S59-15336 and US Patent Nos.
  • an alkali catalyst such as KOH
  • a transition metal compound-porphyrin complex catalyst such as a.complex produced by the reaction between an organoaluminum compound and porphyrin, as disclosed in Japanese Kokai Publication S61-215623
  • polymerization methods with a double metal cyanide complex catalyst as disclosed in Japanese Kokoku Publications S46-27250 and S59-15336 and US Patent Nos.
  • Examples of the method for producing a polyoxyalkylene polymer containing a reactive silyl group include, but not particularly limited to: methods disclosed in Japanese Kokoku Publications S45-36319 and S46-12154 , Japanese Kokai Publications S50-156599 , S54-6096 , S55-13767 , S55-13468 and S57-164123 , Japanese Kokoku Publication H03-2450 , and US Patent Nos.
  • Each of the reactive silyl group-containing polyoxyalkylene polymers may be used alone, or a plurality of the polymers may be used in combination.
  • the saturated hydrocarbon polymer is a polymer that is substantially free from any carbon-carbon unsaturated bond except an aromatic ring.
  • the polymer having such a skeleton is obtainable by (1) polymerizing a C2 to C6 olefin compound as a main monomer, such as ethylene, propylene, 1-butene or isobutylene, or by (2) homopolymerizing a diene compound such as butadiene or isoprene, or copolymerizing such a diene compound with the olefin compound, followed by hydrogenation.
  • isobutylene polymers and hydrogenated polybutadiene polymers are preferable as they allow easy introduction of functional groups at their ends, easy control of the molecular weight, and increase in the number of terminal functional groups. Isobutylene polymers are particularly preferable.
  • Organic polymers having a main chain skeleton of a saturated hydrocarbon polymer are excellent in heat resistance, weather resistance, durability, and moisture barrier property.
  • the isobutylene polymer may comprise monomer units only including isobutylene units, or alternatively, the isobutylene polymer may be a copolymer with another monomer. From the standpoint of rubber properties, the polymer preferably contains 50% by weight or more, more preferably 80% by weight or more, and particularly preferably 90 to 99% by weight, of repeating units derived from isobutylene.
  • Examples of the method for producing a saturated hydrocarbon polymer containing a reactive silyl group include, but are not limited to, methods disclosed in Japanese Kokoku Publications H04-69659 and H07-108928 , Japanese Kokai Publications S63-254149 , S64-22904 and H01-197509 , Japanese Patent Nos. 2539445 and 2873395 , Japanese Kokai Publication H07-53882 , and other documents.
  • Each of the reactive silyl group-containing saturated hydrocarbon polymers may be used alone, or a plurality of the polymers may be used in combination.
  • the (meth)acrylate ester monomer contained in a main chain of the (meth)acrylate ester polymer is not particularly limited and various monomers may be used. Examples thereof include (meth)acrylate monomers such as (meth)acrylic acid, methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, tert-butyl (meth)acrylate, n-pentyl (meth)acrylate, n-hexyl (meth)acrylate, cyclohexyl (meth)acrylate, n-heptyl (meth)acrylate, n-octyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, nonyl (meth)acrylate, decyl (meth)acrylate
  • the (meth)acrylate ester polymers include copolymers of such a (meth)acrylate ester monomer and a vinyl monomer as mentioned below.
  • the vinyl monomer include: styrene monomers such as styrene, vinyltoluene, ⁇ -methylstyrene, chlorostyrene, and styrenesulfonic acid and salts thereof; silyl group-containing vinyl monomers such as vinyltrimethoxysilane and vinyltriethoxysilane; maleic anhydride, maleic acid, and monoalkyl esters and dialkyl esters of maleic acid; fumaric acid, and monoalkyl esters and dialkyl esters of fumaric acid; maleimide monomers such as maleimide, methylmaleimide, ethylmaleimide, propylmaleimide, butylmaleimide, hexylmaleimide, octylmaleimide, dodecylmaleimide,
  • the polymer is preferably a polymer containing a styrene monomer and a (meth)acrylate monomer, more preferably a (meth)acrylic polymer containing an acrylate ester monomer and a methacrylate ester monomer, and particularly preferably an acrylic polymer containing an acrylate ester monomer.
  • a butyl acrylate monomer is more preferably used because the composition is required to have a low viscosity and the cured product thereof is required to have physical properties such as low modulus, high elongation, high weather resistance, and high heat resistance.
  • a copolymer mainly containing ethyl acrylate is more preferably used for use that requires properties including oil resistance, such as automotive application.
  • the polymer mainly containing ethyl acrylate is likely to be slightly poor in low-temperature properties (cold resistance) while being excellent in oil resistance.
  • some ethyl acrylate monomers may be replaced with butyl acrylate monomers.
  • the proportion of butyl acrylate increases, however, the good oil resistance is likely to be impaired.
  • the proportion thereof is preferably 40% or lower, and more preferably 30% or lower, in the case where good oil resistance is required for use.
  • a compound such as 2-methoxyethyl acrylate or 2-ethoxyethyl acrylate in which an oxygen atom is introduced into the side chain alkyl group.
  • the introduction of an alkoxy group having an ether bond in the side chain is likely to cause poor heat resistance.
  • the proportion thereof is preferably 40% or lower in the case where good heat resistance is required for use.
  • suitable polymers may be produced by appropriate adjustment of the proportion in consideration of required physical properties such as oil resistance, heat resistance, and low-temperature properties, based on various uses and requirements.
  • copolymers of ethyl acrylate, butyl acrylate, and 2-methoxyethyl acrylate (weight ratio: 40-50/20-30/30-20) polymers have an excellent balance between physical properties including oil resistance, heat resistance, and low-temperature properties.
  • these preferable monomers may be copolymerized, or even block-copolymerized with another monomer. In such a case, these preferable monomers are preferably contained in an amount of 40% by weight or more.
  • the term "(meth)acrylate for example, as used herein refers to "acrylate and/or methacrylate".
  • the (meth)acrylate ester polymer may be produced by any method such as a conventionally known method.
  • ordinary free radical polymerization in which a compound such as an azo compound or a peroxide is used as a polymerization initiator, is disadvantageously likely to provide a polymer generally having a molecular weight distribution value as high as not lower than 2 and a higher viscosity.
  • the living radical polymerization is preferable in order to produce a (meth)acrylate ester polymer having a narrow molecular weight distribution and a low viscosity and having cross-linkable functional groups introduced in a high proportion into molecular chain ends.
  • atom transfer radical polymerization in which a (meth) acrylate ester polymer may be produced by polymerization in the presence of a substance such as an organic halide or sulfonyl halide compound as an initiator and a transition metal complex as a catalyst.
  • a substance such as an organic halide or sulfonyl halide compound as an initiator and a transition metal complex as a catalyst.
  • the atom transfer radical polymerization provides a polymer terminally having a halogen or the like group which is relatively advantageous to functional-group exchange reactions, and gives a high degree of freedom in selecting an initiator and a catalyst.
  • the atom transfer radical polymerization include the method described in Matyjaszewski et al., Journal of the American Chemical Society (J. Am. Chem. Soc.), 1995, vol. 117, p. 5614 .
  • Examples of the method for producing a (meth)acrylate ester polymer containing a reactive silyl group include methods based on the free radical polymerization using a chain transfer agent, as disclosed in Japanese Kokoku Publications H03-14068 and H04-55444 , Japanese Kokai Publication H06-211922 , and other documents, and methods based on the atom transfer radical polymerization, as disclosed in Japanese Kokai Publication H09-272714 , and other documents.
  • the production method is not particularly limited to these methods.
  • Each of the reactive silyl group-containing (meth)acrylate ester polymers may be used alone or a plurality of the polymers may be used in combination.
  • Each of the aforementioned reactive silyl group-containing organic polymers may be used alone, or a plurality of the polymers may be used in combination. More specifically, an organic polymer may be used which is obtainable by blending at least two polymers selected from the group consisting of a reactive silyl group-containing polyoxyalkylene polymer, a reactive silyl group-containing saturated hydrocarbon polymer, and a reactive silyl group-containing (meth)acrylate ester polymer.
  • An organic polymer obtainable by blending a reactive silyl group-containing polyoxyalkylene polymer with a reactive silyl group-containing (meth)acrylate ester polymer may be produced by the methods disclosed in Japanese Kokai Publications S59-122541 , S63-112642 , H06-172631 , and H11-116763 , and other documents. However, the production method is not particularly limited thereto.
  • the polymer is preferably produced by blending a reactive silyl group-containing polyoxyalkylene polymer with a copolymer containing a reactive silyl group and substantially comprising, in the molecular chain, a (meth)acrylate ester monomer unit containing a C1 to C8 alkyl group, which is represented by the formula (5): -CH 2 -C(R 6 ) (COOR 7 )- (5) wherein R 6 is a hydrogen atom or a methyl group and R 7 is a C1 to C8 alkyl group; and a (meth)acrylate ester monomer unit containing an alkyl group with 9 or more carbon atoms, which is represented by the formula (6): -CH 2 -C(R 6 )(COOR 8 )- (6) wherein R 6 is as mentioned above and R 8 is an alkyl group having 9 or more carbon atoms.
  • R 7 in the formula (5) examples include alkyl groups having 1 to 8, preferably 1 to 4, and more preferably 1 or 2, carbon atoms, such as a methyl group, an ethyl group, a propyl group, a n-butyl group, a t-butyl group, and a 2-ethylhexyl group.
  • each of these alkyl groups as R 7 may be present alone, or two or more kinds of these may be present in admixture.
  • R 8 in the formula (6) examples include long-chain alkyl groups having 9 or more, typically 9 to 30, and preferably 10 to 20 carbon atoms, such as a lauryl group, a tridecyl group, a cetyl group, a stearyl group, and a behenyl group.
  • each of these alkyl groups as R 8 may be present alone, or two or more kinds of these may be present in admixture, as in the case of R 7 .
  • the molecular chain of the (meth)acrylate ester polymer substantially contains monomer units of the formulae (5) and (6).
  • “substantially” means that the total amount of monomer units of the formulae (5) and (6) in the copolymer exceeds 50% by weight.
  • the total amount of monomer units of the formulae (5) and (6) is preferably 70% by weight or more.
  • the abundance ratio (by weight) of the monomer unit of the formula (5) and the monomer unit of the formula (6) is preferably 95:5 to 40:60, and more preferably 90:10 to 60:40.
  • Examples of monomer units that may be contained in the copolymer, other than the monomer units represented by the formulae (5) and (6), include acrylic acids such as acrylic acid and methacrylic acid; amide group-containing monomers such as acrylamide, methacrylamide, N-methylolacrylamide, and N-methylolmethacrylamide, epoxy group-containing monomers such as glycidyl acrylate and glycidyl methacrylate, amino group-containing monomers such as diethylaminoethyl acrylate, diethylaminoethyl methacrylate, and aminoethyl vinyl ether; and other monomer units derived from acrylonitrile, styrene, ⁇ -methylstyrene, alkyl vinyl ether, vinyl chloride, vinyl acetate, vinyl propionate, and ethylene.
  • acrylic acids such as acrylic acid and methacrylic acid
  • amide group-containing monomers such as acrylamide, methacrylamide, N-methylo
  • An organic polymer obtainable by blending a reactive silyl group-containing saturated hydrocarbon polymer with a reactive silyl group-containing (meth)acrylate ester polymer is disclosed, for example but not limited to, in Japanese Kokai Publications H01-168764 and 2000-186176 .
  • organic polymers obtainable by adding a reactive silyl group-containing (meth)acrylate ester polymer may be produced by polymerization of a (meth)acrylate ester monomer in the presence of a reactive silyl group-containing organic polymer.
  • Such production methods are specifically disclosed, for example but not limited to, in Japanese Kokai Publications S59-78223 , S59-168014 , S60-228516 , and S60-228517 .
  • the organic polymer may contain other components such as a urethane bond-containing component in the main chain skeleton, as long as they will not greatly impair the effects of the present invention.
  • the urethane bond-containing component is not particularly limited, and examples thereof include a group formed by reaction between an isocyanate group and an active hydrogen group (hereinafter, also referred to as amide segment).
  • amide segment examples include: a urethane group formed by reaction between an isocyanate group and a hydroxy group; a urea group formed by reaction between an isocyanate group and an amino group; and a thiourethane group formed by reaction between an isocyanate group and a mercapto group.
  • group of the formula (7) also includes groups formed by reactions of active hydrogen in the urethane group, urea group, or thiourethane group with an isocyanate group.
  • Examples of industrially convenient production methods of an organic polymer containing an amide segment and a reactive silyl group include a production method including the steps of reacting an organic polymer having an active hydrogen-containing group at its end with an excessive amount of a polyisocyanate compound to give a polymer having an isocyanate group at the polyurethane main chain end; and thereafter or simultaneously, reacting all or a part of the isocyanate groups with the W group of a silicon compound represented by the formula (8): W-R 10 -SiR 2 3-a X a (8) wherein R 2 , X, and "a" are as mentioned above, R 10 is a divalent organic group and more preferably a C1 to C20 hydrocarbon group, and W is an active hydrogen-containing group selected from the group consisting of a hydroxy group, a carboxy group, a mercapto group, and a (primary or secondary) amino group.
  • Known production methods of organic polymers related to this production method are disclosed in Japanese Kokai Publications H11-279249 ( U.S. Patent No. 5,990,257 ), 2000-119365 ( U.S. Patent No. 6,046,270 ), S58-29818 ( U.S. Patent No. 4,345,053 ), H03-47825 ( U.S. Patent No. 5,068,304 ), H11-60724 , 2002-155145 , and 2002-249538 , WO 03/018658 , and WO 03/059981 , and other documents.
  • organic polymer having an active hydrogen-containing group at its end examples include hydroxy group-terminated oxyalkylene polymers (polyether polyols), polyacrylic polyols, polyester polyols, hydroxy group-terminated saturated hydrocarbon polymers (polyolefin polyols), polythiol compounds, and polyamine compounds.
  • polyether polyols, polyacrylic polyols, and polyolefin polyols are preferable as they can provide organic polymers having a relatively low glass transition temperature and the cured products thereof are excellent in cold resistance.
  • polyether polyols are particularly preferable as they provide organic polymers having good depth curability and adhesiveness, and a low viscosity to allow favorable workability.
  • Polyacrylic polyols and saturated hydrocarbon polymers are more preferable as they provide organic polymers which have, after curing, good weather resistance and heat resistance.
  • polyether polyols produced by any production methods may be used, and a preferable polyether polyol may be terminated by at least 0.7 hydroxy groups per molecular end on the average of all the molecules.
  • oxyalkylene polymers prepared with use of a conventional alkali metal catalyst and oxyalkylene polymers obtainable by reacting an alkylene oxide with an initiator such as a polyhydroxy compound having at least two hydroxy groups in the presence of a double metal cyanide complex or cesium.
  • polymerization methods using a double metal cyanide complex are preferable because they allow production of an oxyalkylene polymer having a lower degree of unsaturation, narrower Mw/Mn, lower viscosity, high acid resistance, and high weather resistance.
  • polyacrylic polyol examples include polyols whose skeleton comprises a (meth)acrylic acid alkyl ester (co)polymer and whose molecule contains a hydroxy group.
  • the polymer may preferably be synthesized by the living radical polymerization, and more preferably the atom transfer radical polymerization as these methods allow production of a polymer having a narrow molecular weight distribution and a low viscosity.
  • Preferable examples also include polymers obtained by the so-called SGO process in which an acrylic acid alkyl ester monomer is continuously bulk-polymerized under high-temperature and high-pressure conditions, as disclosed in Japanese Kokai Publication 2001-207157 . Specific examples thereof include ARUFON UH-2000 produced by Toagosei Co., Ltd.
  • polyisocyanate compound examples include: aromatic polyisocyanates such as toluene(tolylene)diisocyanate, diphenylmethane diisocyanate, and xylylene diisocyanate; and aliphatic polyisocyanates such as isophorone diisocyanate and hexamethylene diisocyanate.
  • the above silicon compound of the formula (8) is not particularly limited, and specific examples thereof include: amino group-containing silanes such as ⁇ -aminopropyltrimethoxysilane, N-( ⁇ -aminoethyl)- ⁇ -aminopropyltrimethoxysilane, (N-phenyl)- ⁇ -aminopropyltrimethoxysilane, N-ethylaminoisobutyltrimethoxysilane, N-cyclohexylaminomethyltriethoxysilane, N-cyclohexylaminomethyldiethoxymethylsilane, and N-phenylaminomethyltrimethoxysilane; hydroxy group-containing silanes such as ⁇ -hydroxypropyltrimethoxysilane; and mercapto group-containing silanes such as ⁇ -mercaptopropyltrimethoxysilane.
  • amino group-containing silanes such as ⁇ -aminopropyltrimeth
  • Also usable as the silicon compound of the formula (8) are Michael addition products derived from various ⁇ , ⁇ -unsaturated carbonyl compounds and primary amino group-containing silanes or Michael addition products derived from various (meth)acryloyl group-containing silanes and primary amino group-containing compounds, as disclosed in Japanese Kokai Publications H06-211879 ( US Patent No. 5,364,955 ), H10-53637 ( US Patent No. 5,756,751 ), H10-204144 ( EP 0831108 ), 2000-169544 , and 2000-169545 .
  • the above reactive silyl group-containing isocyanate compound of the formula (9) is not particularly limited, and specific examples thereof include ⁇ -trimethoxysilylpropyl isocyanate, ⁇ -triethoxysilylpropyl isocyanate, ⁇ -methyldimethoxysilylpropyl isocyanate, ⁇ -methyldiethoxysilylpropyl isocyanate, trimethoxysilylmethyl isocyanate, triethoxymethylsilylmethyl isocyanate, dimethoxymethylsilylmethyl isocyanate, and diethoxymethylsilylmethyl isocyanate.
  • reaction products derived from the silicon compound of the formula (8) and an excessive amount of the polyisocyanate compound mentioned above are also usable as the reactive silyl group-containing isocyanate compound of the formula (9).
  • R 1 is a hydrogen atom or a substituted or unsubstituted organic group.
  • a carboxylic acid (b1) and/or a carboxylate metal salt (b2) are used as the component (B).
  • the component (B) functions as a so-called silanol condensation catalyst which may allow siloxane bond formation from a hydroxy group or hydrolizable group which is bonded to a silicon atom in the organic polymer (A).
  • each of the carboxylic acid (b1) and the carboxylate metal salt (b2) may be used alone or they may be used in combination. Any of them are preferable as they have less environmental load as non-organotin catalysts. Especially, the carboxylic acid (b1) is more preferable as it is a catalyst that is substantially free from any metal. Also, the carboxylate metal salt (b2) is more preferable as its use provides a curable composition showing less curing retardation after storage compared to that obtained from the carboxylic acid (b1).
  • carboxylic acid (b1) is not limited to carboxylic acids and includes carboxylic acid derivatives which may produce a carboxylic acid via hydrolysis, such as carboxylic acid anhydrides, esters, amides, nitriles, and acyl chlorides. Carboxylic acids are particularly preferable as the carboxylic acid (b1) as they have a high catalytic activity.
  • carboxylic acid (b1) include: straight-chain saturated fatty acids such as acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, undecanoic acid, lauric acid, tridecylic acid, myristic acid, pentadecylic acid, palmitic acid, heptadecylic acid, stearic acid, nonadecanoic acid, arachic acid, behenic acid, lignoceric acid, cerotic acid, montanic acid, melissic acid, and lacceric acid; monoenoic unsaturated fatty acids such as undecylenic acid, linderic acid, tsuzuic acid, physeteric acid, myristoleic acid, 2-hexadecenoic acid, 6-hexadecenoic acid, 7-hexadecenoic acid, palmitoleic acid,
  • Examples of an aliphatic dicarboxylic acid include: saturated dicarboxylic acids such as adipic acid, azelaic acid, pimelic acid, suberic acid, sebacic acid, ethylmalonic acid, glutaric acid, oxalic acid, malonic acid, succinic acid, and oxydiacetic acid; and unsaturated dicarboxylic acids such as maleic acid, fumaric acid, acetylenedicarboxylic acid, and itaconic acid.
  • Examples of an aliphatic polycarboxylic acid include tricarboxylic acids such as aconitic acid, citric acid, and isocitric acid.
  • aromatic carboxylic acid examples include: aromatic monocarboxylic acids such as benzoic acid, 9-anthracenecarboxylic acid, atrolactic acid, anisic acid, isopropylbenzoic acid, salicylic acid, and toluic acid; and aromatic polycarboxylic acids such as phthalic acid, isophthalic acid, terephthalic acid, carboxyphenylacetic acid, and pyromellitic acid.
  • aromatic monocarboxylic acids such as benzoic acid, 9-anthracenecarboxylic acid, atrolactic acid, anisic acid, isopropylbenzoic acid, salicylic acid, and toluic acid
  • aromatic polycarboxylic acids such as phthalic acid, isophthalic acid, terephthalic acid, carboxyphenylacetic acid, and pyromellitic acid.
  • Other examples include amino acids such as alanin, leucine, threonine, asparagic acid, glutamic acid,
  • the carboxylic acid (b1) is preferably 2-ethylhexanoic acid, octylic acid, neodecanoic acid, oleic acid, naphthenic acid, or the like, because of their easy availability, low cost, and good compatibility with the component (A).
  • the melting point of the carboxylic acid (b1) is preferably 65°C or lower, more preferably -50°C to 50°C, and particularly preferably -40°C to 35°C.
  • the resulting curable composition is in a solid or high-viscous liquid form to have poor handleability (poor workability).
  • the carboxylic acid (b1) has a small carbon number (small molecular weight)
  • the acid is easily vaporized by heat, which may lower the catalytic function.
  • the carbon number of the carboxylic acid (b1) is preferably 2 to 20, more preferably 6 to 17, and particularly preferably 8 to 12, including the carbon of the carbonyl group.
  • the carboxylic acid (b1) is preferably a dicarboxylic acid or monocarboxylic acid, and more preferably a monocarboxylic acid.
  • the carboxylic acid (b1) more preferably has a tertiary carbon (e.g., 2-ethylhexanoic acid) or a quaternary carbon (e.g., neodecanoic acid, pivalic acid) as the carbon atom adjacent to the carbonyl group because the composition is allowed to have a high curing rate.
  • the carboxylic acid (b1) particularly preferably has a quaternary carbon as the carbon atom adjacent to the carbonyl group. When the carboxylic acid (b1) has a quaternary carbon as the carbon atom adjacent to the carbonyl group, the composition is more likely to have superior adhesiveness compared to the compositions containing other carboxylic acids.
  • Examples of the carboxylic acid having a quaternary carbon as the carbon atom adjacent to the carbonyl group include chain fatty acids represented by the formula (10):
  • R 11 , R 12 , and R 13 are each independently a substituted or unsubstituted monovalent hydrocarbon group and may contain a carboxyl group; and cyclic fatty acids having a structure represented by the formula (11):
  • R 14 is a substituted or unsubstituted monovalent hydrocarbon group and R 15 is a substituted or unsubstituted divalent hydrocarbon group, and each of them may contain a carboxyl group, or a structure represented by the formula (12):
  • R 16 is a substituted or unsubstituted trivalent hydrocarbon group and may contain a carboxyl group.
  • chain monocarboxylic acids such as pivalic acid, 2,2-dimethylbutyric acid, 2-ethyl-2-methylbutyric acid, 2,2-diethylbutyric acid, 2,2-dimethylvaleric acid, 2-ethyl-2-methylvaleric acid, 2,2-diethylvaleric acid, 2,2-dimethylhexanoic acid, 2,2-diethylhexanoic acid, 2,2-dimethyloctanoic acid, 2-ethyl-2,5-dimethylhexanoic acid, neodecanoic acid, versatic acid, and 2,2-dimethyl-3-hydroxypropionic acid; chain dicarboxylic acids such as dimethylmalonic acid, ehyhlmethylmalonic acid, diethylmalonic acid, 2,2-dimethylsuccinic acid, 2,2-diethyls
  • neodecanoic acid particularly preferable are neodecanoic acid, versatic acid, 2,2-dimethyloctanoic acid, and 2-ethyl-2,5-dimethylhexanoic acid.
  • a single species of carboxylic acid (b1) may be used alone or two or more species may be used in combination.
  • carboxylate metal salt (b2) examples include tin carboxylate, lead carboxylate, bismuth carboxylate, potassium carboxylate, calcium carboxylate, barium carboxylate, titanium carboxylate, zirconium carboxylate, hafnium carboxylate, vanadium carboxylate, manganese carboxylate, iron carboxylate, cobalt carboxylate, nickel carboxylate, and cerium carboxylate as they have high catalytic activities.
  • tin carboxylate, lead carboxylate, bismuth carboxylate, titanium carboxylate, iron carboxylate, and zirconium carboxylate and particularly preferable is tin carboxylate. Divalent tin carboxylate is most preferable.
  • Examples of the carboxylic acid having an acid group contained in the carboxylate metal salt (b2) include various carboxylic acids listed above as examples of the carboxylic acid (b1).
  • the carbon number of the carbonyl group of the component (b2) is preferably 2 to 20, more preferably 6 to 17, and particularly preferably 8 to 12, including the carbon in the carbonyl group.
  • the carboxylate metal salt is preferably a dicarboxylate metal salt or a monocarboxylate metal salt, and more preferably a monocarboxylate metal salt.
  • the carboxylate metal salt preferably has a tertiary carbon (e.g., 2-ethylhexanoate metal salt) or a quaternary carbon (e.g., neodecanoate metal salt, pivalate metal salt) as the carbon atom adjacent to the carbonyl group because the composition is allowed to have a high curing rate.
  • the carboxylate metal salt particularly preferably has a quaternary carbon as the carbon atom adjacent to the carbonyl group.
  • the carboxylate metal salt preferably has a quaternary carbon as the carbon atom adjacent to the carbonyl group.
  • carboxylate metal salts (b2) more preferable are tin versatate, tin 2-ethylhexanoate, tin neodecanoate, tin pivalate and the like because the composition is allowed to have a high curing rate and its cured product is less colored.
  • carboxylate metal salt (b2) allows the curable composition to have good restorability, durability, and creep resistance.
  • the use is also expected to have positive effects on water-resistant adhesiveness, adhesion durability under high-temperature and high-humidity conditions, residual tack, dust adhesion, staining, surface weather resistance, heat resistance, adhesiveness to concrete, and other properties.
  • a single species of carboxylate metal salt (b2) may be used alone or two or more species may be used in combination.
  • each of the components (b1) and (b2) may be used alone, or both of them may be used in combination.
  • the carboxylic acid (b1) and the carboxylate metal salt (b2) are used in combination, the carboxylic acid (b1) is particularly preferably the same as a carboxylic acid from which the carboxylate ion of the carboxylate metal salt (b2) is derived.
  • the amount of the component (B) is preferably 0.01 to 20 parts by weight, more preferably 0.1 to 15 parts by weight, and particularly preferably 1 to 10 parts by weight, for each 100 parts by weight of the component (A). If the amount of the component (B) is below the above-mentioned range, the composition may fail to have a practical curing rate and the curing reaction may not proceed well. On the other hand, if the amount of the component (B) exceeds the above-mentioned range, the pot life of the composition may be so short that workability tends to be lowered, and storage stability also tends to be reduced.
  • the component (C) is an amine compound having two or more amino groups and no reactive silyl group in one molecule.
  • the reactive silyl group used here refers to the same reactive silyl group as mentioned for the organic polymer (A) having a reactive silyl group.
  • An amine compound having a reactive silyl group may be used in combination, but the component (C) is required to be an amine compound having no reactive silyl group in order to enhance the activity of the component (B).
  • the component (C) enhances the catalytic activity of the component (B) so that the curable composition to be provided has improved curability.
  • amine compound (C) examples include, but are not limited to: diamines such as ethylenediamine, propylenediamine, trimethylenediamine, tetramethylenediamine, 1,3-diaminobutane, 2,3-diaminobutane, pentamethylenediamine, 2,4-diaminopentane, hexamethylenediamine, 1,7-diaminoheptane, 1,8-diaminooctane, 1,9-diaminononane, 1,10-diaminodecane, N-methylethylenediamine, N-ethylethylenediamine, N,N,N',N'-tetramethylethylenediamine, 3-dimethylaminopropylamine, 3-diethylaminopropylamine, 3-dipropylaminopropylamine, hydrazine, 1,1-dimethylhydrazine, 1,1-diphenylhydride,
  • the component (C) is preferably a diamine compound as it enhances the activity of the component (B) so the cured product tends to have lower residual tack on the surface.
  • component (C) have widely different promoter activities according to factors such as the structure of component (C) itself, and compatibility with the component (A). Therefore, it is preferable to select an appropriate compound as the component (C) in accordance with the kind of the component (A) to be used.
  • an appropriate compound as the component (C) in accordance with the kind of the component (A) to be used.
  • an amine compound having a primary amino group as the component (C) such as propylenediamine, N-methylethylenediamine, or 3-diethylaminopropylamine, for its high promoter activity.
  • a diamine having one primary amino group and one tertiary amino group in one molecule as it has higher promoter activity.
  • the component (C) having such a structure include dimethylaminoethylamine, diethylaminoethylamine, 3-dimethylaminopropylamine, and 3-diethylaminopropylamine.
  • Particularly preferable is 3-diethylaminopropylamine as it is readily available and is more likely to allow the curable composition to have good adhesiveness, workability, and storage stability.
  • a single species of component (C) may be used alone or two or more species may be used in combination.
  • the amount of the amine compound (C) is preferably 0.01 to 20 parts by weight and more preferably 0.1 to 5 parts by weight for each 100 parts by weight of the organic polymer (A). If the amount of the component (C) is less than 0.01 parts by weight, the composition may fail to have a sufficient curing rate and the curing reaction may not proceed well. On the other hand, if the amount of the component (C) is more than 20 parts by weight, the composition may have so short a pot life that workability tends to be lowered, and may be likely to have reduced adhesiveness to a substrate. In addition, the composition may have a slower rather than a faster curing rate.
  • a monoamine compound other than the above-mentioned component (C) may be used in combination.
  • aliphatic primary amines such as methylamine, ethylamine, propylamine, isopropylamine, butylamine, amylamine, hexylamine, octylamine, 2-ethylhexylamine, nonylamine, decylamine, laurylamine, pentadecylamine, cetylamine, stearylamine, and cyclohexylamine
  • aliphatic secondary amines such as dimethylamine, diethylamine, dipropylamine, diisopropylamine, dibutylamine, diamylamine, dihexylamine, dioctylamine, di(2-ethylhexyl)amine, didecylamine, dilaurylamine, dicetylamine, distearylamine
  • the amount of the monoamine is preferably 10 parts by weight or less, and more preferably 3 parts by weight or less, for each 100 parts by weight of the organic polymer (A). If the amount of the monoamine is more than 10 parts by weight, the composition may have so short a pot life that workability tends to be lowered, and may be likely to have reduced adhesiveness to a substrate. On the other hand, if the amount of the monoamine is larger than the amount of the component (C), the composition tends to have poor curability. Hence, the molar amount of the monoamine is preferably equal to or less than that of the component (C).
  • a carboxylic acid and/or a carboxylate metal salt as a curing catalyst, and an amine compound for improving the activity of the catalyst are used in combination.
  • another known silanol condensation catalyst may be used in combination as long as it will not impair the effects of the present invention.
  • titanium compounds such as tetrabutyl titanate, tetrapropyl titanate, titanium tetrakis (acetylacetonate), diisopropoxytitanium bis(acetylacetonate), and diisopropoxytitanium bis(ethylacetoacetate); organotin compounds such as dibutyltin dilaurate, dibutyltin maleate, dibutyltin phthalate, dibutyltin dioctanoate, dibutyltin bis(2-ethylhexanoate), dibutyltin bis(methylmaleate), dibutyltin bis(ethylmaleate), dibutyltin bis (butylmaleate), dibutyltin bis(octylmaleate), dibutyltin bis (tridecylmaleate), dibutyltin bis(benzylmaleate), dibutyltin diacetate, dioc
  • the amount of organotin compound is preferably small as it is toxic.
  • the amount of organotin compound is preferably 0.02% by weight or less of the amount of the curable composition. More preferably, the curable composition is free from any organotin compound.
  • metal compounds other than the organotin compounds are preferably used in a small amount.
  • the compound (D) is a phosphorus compound having an aryl group and a melting point of 23°C or higher.
  • the phosphorus compound prevents crystallization of small particles on the surface of the cured product to be provided. Further, addition of the component (D) does not adversely affect the catalytic activity, the adhesiveness of the curable composition, and other properties.
  • the phosphorus compound (D) is required to have a melting point of 23°C or higher.
  • the phosphorus compound mixed with the component (C) of the present invention often gives off a peculiar odor and one who handles the obtained curable composition may feel ill.
  • the phosphorus compound having a melting point of 23°C or higher is less likely to cause such problems and is suitably used.
  • the effect of the present invention namely, the effect of preventing crystallization, is not exerted.
  • Examples of the structure of the phosphorus compound having an aryl group include a structure represented by the formula (13):
  • each of the b R 17 s is at least one selected from the group consisting of a hydrogen atom, a halogen atom, a hydroxy group, an amino group, a nitro group, a cyano group, a sulfonic acid group, and an organic group;
  • "b" is an integer of 1 to 5;
  • each of the 3-n R 18 s is at least one selected from the group consisting of a hydrogen atom, a halogen atom, a hydroxy group, an amino group, a nitro group, a cyano group, a sulfonic acid group, and an organic group; and
  • n is an integer of 1 to 3.
  • the component (D) is a phosphorus compound having at least one aryl group in one molecule and preferably has two or more aryl groups in order to enhance the effects.
  • "n" is preferably 2 or 3.
  • the component (D) is more preferably a phosphorus compound having an aryl group to which a t-butyl group is bonded.
  • aryl groups a 2,4-di-t-butylphenyl group is still more preferable for enhancing the effects.
  • the phosphorus compound having an aryl group as the component (D) preferably contains a phosphorus atom having an oxidation number of +3 or +5.
  • a phosphorus atom may have an oxidation number of -3, -1, +1, +3, or +5.
  • the phosphorus compound preferably contains a phosphorus atom having an oxidation number of +3 or +5, and particularly preferably contains a phosphorus atom having an oxidation number of +5.
  • Examples of the phosphorus compound containing an aryl group and a phosphorus atom having an oxidation number of +5 include, but are not limited to, phenyl phosphate, diphenyl phosphate, triphenyl phosphate, nonyl phenyl phosphate, nonyl diphenyl phosphate, trisnonylphenyl phosphate, octyl phenyl phosphate, dioctyl phenyl phosphate, octyl diphenyl phosphate, tris(2,4-di-t-butylphenyl) phosphate, cresyl phosphate, dicresyl phosphate, cresyl phenyl phosphate, dicresyl phenyl phosphate, diethyl benzylphosphate, tri(hydroxy-methylphenyl) phosphate, sodium bis(4-tert-butylphenyl) phosphate, 3,5-di-
  • the phosphorus compound (D) preferably has no hydroxy group in the molecule.
  • a phosphorus compound in which a hydroxy group is directly bonded to a phosphorus atom is not preferable as it functions as a curing catalyst to have an influence on the curing rate of the curable composition of the present invention.
  • the curing composition preferably contains not more than 0.02% by weight of phosphorus compound having a hydroxy group in the molecule, and is particularly preferably free from this compound.
  • a phosphonium salt having an aryl group may also be used.
  • examples thereof include, but are not limited to, ethyltriphenylphosphonium acetate/acetic acid complexes, ethyltriphenylphosphonium bromide, ethyltriphenylphosphonium iodide, tetraphenylphosphonium tetrakis(4-methylphenyl)borate, tetraphenylphosphonium tetraphenylborate, tetraphenylphosphonium bromide, phenylphosphonic acid, phenylphosphonic dichloride, dimethyl phenylphosphonate, n-butyltriphenylphosphonium bromide, benzyltriphenylphosphonium chloride, and methoxymethyltriphenylphosphonium chloride.
  • the phosphorus compound (D) of the present invention may have a ring structure with a phosphorus atom and an aryl group.
  • a phosphorus compound having such a ring structure include, but are not limited to, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and sodium 2,2'-methylene bis (4,6-di-tert-butylphenyl) phosphate.
  • HCA, HCA-HQ, SANKO-BCA, M-Ester, and ME-P8 (all of these are trade names) produced by Sanko Co., Ltd. may be used.
  • the phosphorus compound (D) may be a polyoxyethylene alkyl phenyl ether phosphate salt which is generally used as a surfactant.
  • the component (D) may be a metal salt of a phosphorus compound containing an aryl group.
  • Metal salts of phosphorus compounds are preferable because they less affect curability and do not impair storage stability.
  • Preferable metals used for the metal salts of phosphorus compounds are alkali metals, alkaline-earth metals, and zinc. Examples of the alkali metals include sodium, potassium, and lithium. Examples of the alkaline-earth metals include calcium, magnesium, barium, and strontium. Among these, alkali metals and zinc are particularly preferable, and sodium, potassium, lithium, and zinc are more preferable.
  • Examples of the metal salts of phosphorus compounds include, but are not limited to, disodium phenylphosphate, dipotassium phenylphosphate, dilithium phenylphosphate, sodium di(p-tolyl) phosphate, potassium di (p-tolyl) phosphate, lithium di (p-tolyl) phosphate, calcium di(p-tolyl) phosphate, sodium bis(4-tert-butylphenyl) phosphate, potassium bis(4-tert-butylphenyl) phosphate, lithium bis(4-tert-butylphenyl) phosphate, sodium 2,2'-methylene bis(4,6-di-tert-butylphenyl) phosphate, potassium 2,2'-methylene bis(4,6-di-tert-butylphenyl) phosphate, and lithium 2,2'-methylene bis(4,6-di-tert-butylphenyl) phosphate.
  • phosphorus compounds preferable are metal salts of phosphorus compounds represented by formula (17) :
  • each of the R 19 s, R 20 s, and R 21 s independently represents a hydrogen atom, or a C1 to C18 linear or branched alkyl group, or a hydroxy group;
  • R 22 represents a hydrogen atom or a methyl group;
  • c represents 1 or 2;
  • M represents a hydrogen atom or an alkali metal atom in the case that “c” is 1, and
  • M represents an alkaline-earth metal atom or a zinc atom in the case that "c” is 2.
  • metal salts of 2,2'-methylene bis(4,6-di-tert-butylphenyl) phosphate represented by the formula (18):
  • c and M are as mentioned above.
  • Particularly preferable are a sodium salt, an aluminum salt, a lithium salt, and a calcium salt thereof.
  • sodium 2,2'-methylene bis(4,6-di-tert-butylphenyl) phosphate is particularly preferable.
  • This phosphorus compound having the following structure (19) is offered by ADEKA Corporation under the trade name T-629 and is easily available.
  • another usable compound is an aluminum or lithium salt having the same ligand as T-629.
  • examples thereof include, but are not limited to, phenyl cyclohexyl phosphite, diphenyl cyclohexyl phosphite, phenyl dicyclohexyl phosphite, methyl dicresyl phosphite, dimethyl cresyl phosphite, ethyl dicresyl phosphite, diethyl cresyl phosphite, propyl dicresyl phosphite, dipropyl cresyl phosphite, butyl dicresyl phosphite, dibutyl cresyl phosphite, 2-ethyl
  • tris(2,4-dit-butylphenyl) phosphite is preferable as it inhibits crystallization.
  • This compound is offered under the trade names of Irgafos 168 (produced by Ciba Japan K.K.) and Adekastab 2112 (produced by ADEKA CORPORATION) and is easily available.
  • a single species of component (D) may be used alone or two or more species may be used in combination.
  • the component (D) may be dissolved or dispersed in a liquid ingredient such as a solvent or a plasticizer, or may be dispersed in a solid filler such as calcium carbonate, prior to the addition.
  • a liquid ingredient such as a solvent or a plasticizer
  • a solid filler such as calcium carbonate
  • the component (D) needs to be used in the form of fine powder so as to be sufficiently dispersed in the composition.
  • the amount of the component (D) is preferably 1 to 20 parts by weight, more preferably 2 to 15 parts by weight, and particularly preferably 3 to 10 parts by weight, for each 100 parts by weight of the organic polymer (A).
  • An amount of the component (D) of less than 1 part by weight may not sufficiently solve the problems arising on the surface of the cured product.
  • an amount of the component (D) of more than 20 parts by weight tends to decrease adhesiveness of the cured product and is economically disadvantageous.
  • a phosphorus compound having no aryl group may be used in combination.
  • examples thereof include, but are not limited to, methyl phosphate, dimethyl phosphate, trimethyl phosphate, ethyl phosphate, diethyl phosphate, triethyl phosphate, propyl phosphate, dipropyl phosphate, tripropyl phosphate, butyl phosphate, dibutyl phosphate, tributyl phosphate, 2-ethylhexyl phosphate, di(2-ethylhexyl) phosphate, tri(2-ethylhexyl) phosphate, decyl phosphate, didecyl phosphate, tridecyl phosphate, dodecyl phosphate, didodecyl phosphate, tridodecyl phosphate, octadecyl phosphate, 2-chloroethyl phosphate, methylethyl
  • phosphorus compounds may also be used. Examples thereof include methylphosphonic acid, ethylphosphonic acid, propylphosphonic acid, butylphosphonic acid, hexylphosphonic acid, 2-ethylhexylphosphonic acid, decylphosphonic acid, phenylphosphonic acid, benzylphosphonic acid, methylphosphonic acid dichloride, ethylphosphonic acid dichloride, propylphosphonic acid dichloride, butylphosphonic acid dichloride, hexylphosphonic acid dichloride, 2-ethylhexylphosphonic acid dichloride, decylphosphonic acid dichloride, methylphosphonic acid dimethyl ester, ethylphosphonic acid dimethyl ester, butylphosphonic acid dimethyl ester, hexylphosphonic acid dimethyl ester, 2-ethylhexylphosphonic acid dimethyl ester, methylphosphonic acid diethyl ester, ethylphosphonic acid diethy
  • the curable composition of the present invention may contain a plasticizer if necessary.
  • plasticizer examples include: phthalate esters such as bis(2-ethylhexyl) phthalate, diisodecyl phthalate, diisononyl phthalate, and butyl benzyl phthalate; nonaromatic dibasic acid esters such as dioctyl adipate, dioctyl sebacate, and isodecyl succinate; aliphatic esters such as butyl oleate and methyl acetylricinoleate; phosphate esters such as tricresyl phosphate; trimellitate esters; sulfonate esters such as phenyl hexadecanesulfonate; chlorinated paraffins; hydrocarbon oils such as alkyldiphenyls and partially hydrogenated terphenyls; process oils; and epoxy plasticizers.
  • phthalate esters such as bis(2-ethylhexyl) phthalate, diisodecy
  • phthalate ester plasticizers may contribute to production of curable compositions having excellent curability.
  • the phthalate ester plasticizers are bis(2-ethylhexyl) phthalate, bis(2-propylhexyl) phthalate, diisodecyl phthalate, and diisononyl phthalate due to their easy availability.
  • a plasticizer produced by hydrogenating diisononyl phthalate is preferable because such a plasticizer has excellent safety and a low viscosity, and thus provides good workability when contained in the curable composition of the present invention.
  • This plasticizer is offered under the trade name Hexamoll DINCH by BASF and easily available.
  • Examples of a polymer plasticizer include: vinyl polymers; esters of polyalkylene glycols; polyester plasticizers; polyether polyols such as polypropylene glycol; polystyrenes; polybutadiene, and polybutene.
  • the polymer plasticizer preferably has a number average molecular weight of 500 to 15000.
  • the polymer plasticizer is preferably a reactive silyl group-containing polymer plasticizer because such a polymer plasticizer is involved in the curing reaction and can be prevented from transferring from the cured product to be provided.
  • These plasticizers may be added alone, or may be added in combination.
  • the amount of plasticizer is preferably 5 to 150 parts by weight, more preferably 10 to 120 parts by weight, and particularly preferably 20 to 100 parts by weight, for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain a silane coupling agent if necessary.
  • silane coupling agent examples include: amino silanes such as ⁇ -aminopropyltrimethoxysilane, ⁇ -aminopropyltriethoxysilane, ⁇ -(2-(2-aminoethyl)aminoethyl)aminopropyltrimethoxysilane, 3-(N-ethylamino)-2-methylpropyltrimethoxysilane, and N-phenylaminomethyltrimethoxysilane; ketimine silanes such as N-(1,3-dimethylbutylidene)-3-(triethoxysilyl)-1-propaneamine; isocyanato silanes such as ⁇ -isocyanatopropyltrimethoxysilane; mercapto silanes such as ⁇ -mercaptopropyltrimethoxysilane; epoxy silanes such as ⁇ -glycidoxypropyltrimethoxysilane; carboxy silanes
  • the amount of silane coupling agent is preferably 0.01 to 20 parts by weight for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain additives such as epoxy resin, phenol resin, sulfur, alkyl titanates, and aromatic polyisocyanates if necessary.
  • the amount of these additives is preferably 5 parts by weight or less for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain a filler if necessary.
  • the filler include reinforcing fillers such as fumed silica, precipitated silica, crystalline silica, fused silica, dolomite, silicic anhydride, hydrous silicic acid, and carbon black; heavy calcium carbonate, colloidal calcium carbonate, magnesium carbonate, diatomite, clay, talc, titanium oxide, bentonite, ferric oxide, fine aluminum powder, flint powder, zinc oxide, activated zinc white, shirasu balloons, glass microballoons, organic microballoons of phenol resin or vinylidene chloride resin, and organic powders such as PVC powder and PMMA powder; and fibrous fillers such as glass fiber and filaments.
  • the amount of filler is preferably 1 to 250 parts by weight, and more preferably 10 to 200 parts by weight, for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain a scaly or granular substance.
  • the scaly or granular substance include natural materials such as silica sand and mica, synthetic rubber, synthetic resin, and inorganic materials such as alumina.
  • the amount of scaly or granular substance is preferably 1 to 200 parts by weight for each 100 parts by weight of the curable composition.
  • the curable composition of the present invention may contain a silicate if necessary.
  • the silicate include tetraalkoxysilanes such as tetramethoxysilane, and partially hydrolyzed condensation products derived therefrom.
  • the amount of silicate is preferably 0.1 to 20 parts by weight for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain a tackifier if necessary.
  • the tackifier resin include styrene block copolymers, and hydrogenated products thereof, phenol resins, coumarone indene resins, rosin resins, xylene resins, styrene copolymer resins, petroleum resins (such as C5 hydrocarbon resins and C9 hydrocarbon resins), hydrogenated petroleum resins, terpene resins, and DCPD petroleum resins.
  • the amount of tackifier is preferably 5 to 1,000 parts by weight for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain a solvent or a diluent if necessary.
  • the solvent and the diluent include aliphatic hydrocarbons, aromatic hydrocarbons, alicyclic hydrocarbons, halogenated hydrocarbons, alcohols, esters, ketones, and ethers. These compounds may be added alone, or may be added in combination.
  • the curable composition of the present invention may contain a physical-property modifier if necessary.
  • a physical-property modifier Preferable among physical-property modifiers are ones that generate a compound containing a monovalent silanol group in the molecule via hydrolysis because such modifiers reduce the modulus of the cured product to be provided without increasing the surface stickiness thereof.
  • the amount of physical-property modifier is preferably 0.1 to 20 parts by weight for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain a thixotropic agent if necessary.
  • thixotropic agent include polyamide waxes; hydrogenated castor oil derivatives; and metal soaps such as calcium stearate. Examples thereof further include powdery rubber having a particle size of 10 to 500 ⁇ m, and organic fiber. These thixotropic agents may be added alone, or may be added in combination.
  • the amount of thixotropic agent is preferably 0.1 to 20 parts by weight for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain a compound having an epoxy group in each molecule if necessary. Such an epoxy group-containing compound enhances restorability of the cured product to be provided.
  • epoxy group-containing compound examples include epoxidized unsaturated fats and oils, epoxidized unsaturated fatty acid esters, alicyclic epoxy compounds, compounds such as epichlorohydrin derivatives, and mixtures thereof.
  • the amount of epoxy compound is preferably 50 parts by weight or less for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain a photocurable substance if necessary.
  • the photocurable substance include conventionally known ones such as organic monomers, oligomers, resins, and compositions containing these substances. Specific examples thereof include unsaturated acrylic compounds, polyvinyl cinnamates, and azidized resins.
  • the amount of photocurable substance is preferably 0.1 to 20 parts by weight for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain an oxygen-curable substance if necessary.
  • the oxygen-curable substance include drying oils such as tung oil and linseed oil, and various alkyd resins produced by modification of such compounds; drying oil-modified acrylic polymers, epoxy resins, and silicone resins; liquid polymers such as 1,2-polybutadiene, 1,4-polybutadiene, and C5-C8 diene polymers; and liquid copolymers such as NBR and SBR, which are produced by copolymerizing such a diene compound and a vinyl compound copolymerizable therewith, e.g., acrylonitrile or styrene, such that the diene compound serves as the main component.
  • the amount of oxygen-curable substance is preferably 0.1 to 20 parts by weight for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain an antioxidant if necessary.
  • the antioxidant include hindered phenol antioxidants such as BHT.
  • the amount of antioxidant is preferably 0.1 to 10 parts by weight for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain a light stabilizer if necessary.
  • the light stabilizer include hindered amine compounds, benzoate compounds, and salicylate compounds. Preferable among these are hindered amine light stabilizers for their high weather resistance.
  • the amount of light stabilizer is preferably 0.1 to 10 parts by weight for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain an ultraviolet absorber if necessary.
  • the ultraviolet absorber include benzophenone compounds, benzotriazole compounds, substituted tolyl compounds, and metal chelate compounds.
  • the amount of ultraviolet absorber is preferably 0.1 to 10 parts by weight for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may contain an epoxy resin if necessary.
  • the epoxy resin improves adhesiveness of the cured product to be provided, and curable compositions containing the epoxy resin can be suitably used as adhesives, especially adhesives for exterior wall tiles.
  • epoxy resin examples include epichlorohydrin-bisphenol A epoxy resin, novolac epoxy resin, hydrogenated bisphenol A epoxy resin, alicyclic epoxy resins, N,N-diglycidylaniline, triglycidyl isocyanurate, polyalkylene glycol diglycidyl ethers, glycidyl ethers of polyalcohols such as glycerin, hydantoin epoxy resin, and epoxidized products of unsaturated polymers such as petroleum resins.
  • the curable composition of the present invention contains the epoxy resin
  • the curable composition preferably further contains a curing agent for the epoxy resin.
  • the curing agent for the epoxy resin include primary and secondary amines such as triethylenetetramine, N-aminoethylpiperidine, m-xylylenediamine, m-phenylenediamine, isophoronediamine, and amine-terminated polyethers; tertiary amines such as 2,4,6-tris(dimethylaminomethyl)phenol, and salts of these tertiary amines; polyamide resins; imidazoles; dicyandiamides; alcohols; phenols; carboxylic acids; and diketone complex compounds of aluminum or zirconium.
  • ketimine compounds Preferable among the curing agents for the epoxy resin are ketimine compounds because they allow production of one-pack type curable compositions.
  • the ketimine compound is stable in the absence of moisture, but is decomposed into a primary amine and a ketone by moisture; the generated primary amine serves as a curing agent for curing the epoxy resin at room temperature.
  • the curable composition of the present invention may contain a flame retardant if necessary.
  • the flame retardant include phosphorus-based plasticizers such as ammonium polyphosphate and tricresyl phosphate, aluminium hydroxide, and thermally expandable graphite. These flame retardants may be used alone, or may be used in combination.
  • the amount of flame retardant is preferably 5 to 200 parts by weight for each 100 parts by weight of the component (A).
  • the curable composition of the present invention may contain various additives other than the aforementioned additives if necessary.
  • the additives include curability modifiers, radical inhibitors, metal deactivators, antiozonants, phosphorus type peroxide decomposers, lubricants, pigments, blowing agents, repellents for ants, and antifungal agents. These additives may be used alone or may be used in combination.
  • a formulation ingredient that contains moisture is preferably dehydrated and dried prior to the addition, or is preferably dehydrated by pressure reduction or the like operation during the blending and kneading.
  • the curable composition is of two-pack type
  • a curing catalyst is not required to be blended in the base mixture including the reactive silyl group-containing organic polymer.
  • the composition is less likely to cure (gelate) even though some moisture exists in the formulation ingredients; if long-time storage stability is required, however, the formulation ingredients are preferably dehydrated and dried.
  • Preferable examples of the dehydrating or drying method include: heat drying and vacuum dehydration in the case that the formulation ingredients are solids such as powder; and vacuum dehydration, and dehydration with substances such as synthetic zeolite, silica gel, and magnesium oxide in the case that the formulation ingredients are liquids.
  • addition of an alkoxysilane compound, an oxazolidine compound, or an isocyanate compound improves the storage stability of the curable composition.
  • an alkoxysilane compound e.g., vinyltrimethoxysilane
  • the amount thereof is preferably 0.1 to 20 parts by weight for each 100 parts by weight of the organic polymer (A).
  • the curable composition of the present invention may be prepared by a conventionally known method. Examples thereof include a method in which the aforementioned ingredients are mixed and kneaded at room temperature or under heating with a mixer, roller, kneader or the like; and a method in which the ingredients are dissolved in a small amount of an appropriate solvent and then mixed.
  • the curable composition of the present invention may be suitably used in applications such as pressure-sensitive adhesives; sealants for uses such as buildings, ships, automobiles, and roads; adhesives; impression materials; vibration-proof materials; damping materials; soundproof materials; expanded/foamed materials; coating compositions; and spray coatings.
  • the curable composition is more preferably used in such applications as sealants and adhesives.
  • the curable composition of the present invention may also be used in various applications such as electric and electronic part materials; elastic adhesives; contact adhesives; spray sealants; crack repair materials; tiling adhesives; powder coating compositions; casting materials; rubber materials for medical use; pressure-sensitive adhesives for medical use; sealants for medical devices; food packaging materials; joint sealants for siding boards and other exterior materials; coating materials; primers; electromagnetic-wave-shielding conductive materials and thermally conductive materials; hot melt materials; potting agents for electrics and electronics; films; gaskets; various molding materials; rustproof and waterproof sealants for wired glass and laminated-glass edges; and liquid sealants for use in automotive parts, electrical machinery parts, various machinery parts, and the like.
  • the curable composition may also be used as various sealing compositions and adhesive compositions because it, either alone or with the aid of a primer, may adhere to a wide range of substrates such as glass, ceramics, wood, metals, and molded resin products.
  • curable composition of the present invention may also be used as adhesives for panels, tiling adhesives, stone pitching adhesives, ceiling finishing adhesives, floor finishing adhesives, wall finishing adhesives, vehicle panel adhesives, direct glazing sealants, double glazing sealants, sealants for SSG systems, and working joint sealants for buildings.
  • Propylene oxide was polymerized in the presence of a 1/1 (in weight ratio) mixture of polyoxypropylene diol having a molecular weight of about 2,000 and polyoxypropylene triol having a molecular weight of about 3,000 as an initiator and a zinc hexacyanocobaltate glyme complex catalyst to provide a polypropylene oxide having a number average molecular weight of about 19,000 (polystyrene-equivalent molecular weight determined with a TOSOH model HLC-8120 GPC solvent delivery system, a TOSOH model TSK-GEL H type column, and THF as a solvent).
  • the resulting unpurified allyl-terminated polypropylene oxide (100 parts by weight) was mixed with n-hexane (300 parts by weight) and water (300 parts by weight) under stirring, and then the water was removed by centrifugation.
  • the resulting hexane solution was further mixed with water (300 parts by weight) under stirring, and the water was removed again by centrifugation. Thereafter, the hexane was removed by volatilization under reduced pressure. Thereby, an allyl group-terminated trifunctional polypropylene oxide having a number average molecular weight of about 19,000 was produced.
  • Propylene oxide was polymerized in the presence of polypropylene glycol as an initiator and a zinc hexacyanocobaltate glyme complex catalyst to provide a polypropylene oxide having a number average molecular weight of about 28,500 (polystyrene-equivalent molecular weight determined by the same method as in Synthesis Example 1). Thereto was added a methanol solution of NaOMe in an amount of 1.2 equivalents relative to hydroxy groups of the hydroxy group-terminated polypropylene oxide, and then the methanol was distilled off. To the residue was added allyl chloride, and thereby each terminal hydroxy group was converted to an allyl group.
  • the resulting unpurified allyl-terminated polypropylene oxide (100 parts by weight) was mixed with n-hexane (300 parts by weight) and water (300 parts by weight) under stirring, and then the water was removed by centrifugation.
  • the resulting hexane solution was further mixed with water (300 parts by weight) under stirring, and the water was removed again by centrifugation. Thereafter, the hexane was removed by volatilization under reduced pressure. Thereby, an allyl group-terminated bifunctional polypropylene oxide having a number average molecular weight of about 28,500 was produced.
  • a mixed solution was prepared in a flask by mixing n-butyl acrylate (68.0 g), methyl methacrylate (10.0 g), stearyl methacrylate (20.0 g), 3-methacryloxypropylmethyldimethoxysilane (2.0 g), and isobutanol (23.0 g) and further dissolving azobisisobutylonitrile (0.5 g) as a polymerization initiator.
  • Isobutanol (43.0 g) was charged into a separable flask equipped with a stirrer, a thermometer, and a nitrogen inlet and was heated to 105°C, and then nitrogen was bubbled so that the system in the flask was replaced by nitrogen.
  • the obtained reactive silyl group-containing acrylic polymer (A-3) was in solution in isobutanol (with solids concentration of 60%) and was found to have a number average molecular weight Mn of 18,000 as determined by GPC (as in the Synthesis Example 1) and expressed on the polystyrene equivalent basis.
  • the methyldimethoxysilyl group-terminated polyoxypropylene polymer (A-2) obtained in Synthesis Example 2 and the isobutanol solution of the reactive silyl group-containing acrylic polymer (A-3) obtained in Synthesis Example 3 were mixed at a solids ratio (in weight ratio) of 70/30.
  • the isobutanol was devolatilized from the mixture with use of a rotary evaporator under heating at 110°C and reduced pressure so that a polymer having a solids concentration of 99% or higher was obtained.
  • the polymer was referred to as a silyl group-containing organic polymer (A-4).
  • the mixture was continued to be heated at 80°C under stirring while triamine (0.14 mL) was further added. After 180 minutes from the start of the reaction, the reaction vessel was vacuumed so that the volatile content was removed. After 240 minutes from the start of the reaction, acetonitrile (118 mL), 1,7-octadiene (49mL), and triamine (1.38 mL) were added and the mixture was continued to be heated at 80°C under stirring. After 620 minutes from the start of the reaction, the heating was discontinued. The resulting reaction mixture was heated under reduced pressure so that the volatile content was removed, followed by dilution with toluene and filtration. The filtrate was concentrated to provide a polymer.
  • the obtained polymer (100 parts by weight), Kyowaad 500SH (aluminum silicate, 2 parts by weight) produced by Kyowa Chemical Industry Co., Ltd., and Kyowaad 700SL (aluminum silicate, 2 parts by weight) produced by Kyowa Chemical Industry Co., Ltd. were mixed with xylene (100 parts by weight) and stirred at 130°C. After three hours, the aluminum silicate was filtered off and the filtrate was heated under reduced pressure so that the volatile content was distilled off. A Br group was removed from the copolymer by heating volatilization (reduced pressure of 10 torr or less) of the polymer at 180°C for 12 hours.
  • the polymer 100 parts by weight), Kyowaad 500SH (3 parts by weight), and Kyowaad 700SL (3 parts by weight) were mixed with xylene (100 parts by weight) and stirred at 130°C. After five hours, the aluminum silicate was filtered off and the filtrate was heated under reduced pressure so that the volatile content was distilled off. As a result, an alkenyl-terminated polymer was obtained. Next, the polymer (23.3 g), methyldimethoxysilane (2.55 mL), dimethyl orthoformate (0.38 mL), and a platinum catalyst were charged into a 200-mL reaction vessel made of pressure-resistant glass.
  • the amount of the platinum catalyst was 2 x 10 -4 equivalents by mole relative to alkenyl groups of the polymer.
  • the reaction mixture was heated at 100°C for three hours.
  • the volatile content of the mixture was removed under reduced pressure so that a silyl group-containing organic polymer (A-5) was obtained which had a reactive silyl group at its end.
  • the silyl group-containing organic polymer (A-5) was found to have a number average molecular weight of 27,000 as determined by GPC (on the polystyrene equivalent basis) with a molecular weight distribution of 1.3.
  • the introduction ratio of methyldimethoxysilyl groups into the ends was found to be about 80%.
  • ACCLAIM POLYOL 12200 polypropylene glycol having a number average molecular weight of about 11,000, 100 parts by weight
  • ⁇ -isocianatepropyltrimethoxysilane 3.3 parts by weight
  • NEOSTANN U-360 mercapto tin catalyst, 30 ppm
  • the reaction was terminated after the disappearance of the peak (2272 cm -1 ) of isocyanate group was determined by IR.
  • a trimethoxysilyl-terminated polypropylene oxide was obtained.
  • This silyl group-containing organic polymer (A-6) was found to have an introduction ratio of trimethoxysilyl groups into the ends of 95% as a result of 1 H-NMR measurement (by the same method as in Synthesis Example 1).
  • the silyl group-containing organic polymer (A-1) produced in Synthesis Example 1 (100 parts by weight), surface-treated colloidal calcium carbonate (120 parts by weight, trade name: HAKUENKA CCR, produced by Shiraishi Kogyo Kaisha, Ltd.), a polypropylene glycol plasticizer with a molecular weight of 3,000 (55 parts by weight, trade name: Actcol P-23, produced by Mitsui Takeda Chemicals Inc.), titanium oxide (20 parts by weight, trade name: TIPAQUE R-820, produced by Ishihara Sangyo Kaisha, Ltd.), a thixotropic agent (2 parts by weight, trade name: DISPARLON 6500, produced by Kusumoto Chemicals, Ltd.), an ultraviolet absorber (1 part by weight, trade name: TINUVIN 326, produced by Ciba Japan K.K.), a light stabilizer (1 part by weight, trade name: SANOL LS770, produced by Sankyo Lifetech Co., Ltd.), and a phosphorus compound
  • Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10
  • Example 12 Example 13 Silyl group-containing organic polymer (A-1) 100 100 50 100 100 100 100 Silyl group-containing organic polymer (A-4) 100 Silyl group-containing organic polymer (A-5) 100 50 50 50 Silyl group-containing organic polymer (A-6) 100 50 50 50 Calcium carbonate HAKUENKA CCR 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 Plasticizer Actcol P-23 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 Paintment TIPAQUE R-820 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
  • Comparative example 1 Comparative example 2 Comparative example 3 Comparative example 4 Comparative example 5 Comparative example 6 Comparative example 7 Comparative example 8 Silyl group-containing organic polymer (A-1) 100 100 100 100 100 100 100 100 100 100 Calcium carbonate HAKUENKA CCR 120 120 120 120 120 120 120 120 120 Plasticizer Actcol P-23 55 55 55 55 55 55 55 55 55 55 55 55 Paintment TIPAQUE R-820 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
  • the silyl group-containing organic polymer (A-1) produced in Synthesis Example 1 (100 parts by weight), surface-treated colloidal calcium carbonate (120 parts by weight, trade name: HAKUENKA CCR, produced by Shiraishi Kogyo Kaisha, Ltd.), a polypropylene glycol plasticizer with a molecular weight of 3,000 (55 parts by weight, trade name: Actcol P-23, produced by Mitsui Takeda Chemicals Inc.), titanium oxide (20 parts by weight, trade name: TIPAQUE R-820, produced by Ishihara Sangyo Kaisha, Ltd.), a thixotropic agent (2 parts by weight, trade name: DISPARLON 6500, produced by Kusumoto Chemicals, Ltd.), an ultraviolet absorber (1 part by weight, trade name: TINUVIN 326, produced by Ciba Japan K.K.), a light stabilizer (1 part by weight, trade name: SANOL LS770, produced by Sankyo Lifetech Co., Ltd.), and a phosphorus compound
  • the mixture was then dehydrated under reduced pressure at 120°C for two hours and cooled to 50°C or lower.
  • the resulting mixture was mixed with vinyltrimethoxysilane (2 parts by weight, trade name: A-171, produced by Momentive Performance Materials Inc.) as a dehydrating agent, and ⁇ -aminopropyltrimethoxysilane (3 parts by weight, trade name: A-1110, produced by Momentive Performance Materials Inc.) as an adhesiveness-imparting agent.
  • tin versatate (trade name: NEOSTANN U-50, produced by Nitto Kasei Co., Ltd.) and diethylaminopropylamine (1 part by weight, reagent produced by Wako Pure Chemical Industries, Ltd.) as silanol condensation catalysts were added thereto and the mixture was kneaded in the presence of substantially no moisture.
  • the resulting composition was enclosed in a cartridge as a dampproof vessel. Thus, a one-pack type curable composition was obtained.
  • Example 14 Each preparation was carried out by the same method as in Example 14 in accordance with the ingredients and amounts as shown in Table 4 to provide a one-pack type curable composition.
  • Example 14 Example 15 Example 16 Comparative example 17 Silyl group-containing organic polymer vmer (A-1) 100 100 100 100 100 Calcium carbonate HAKUENKA CCR 120 120 120 120 Plasticizer Actcol P-23 55 55 55 55 Pigment TIPAQUE R-820 20 20 20 20 Anti-sagging agent DISPARLON 6500 2 2 2 2 Ultraviolet absorber TINUVIN 326 1 1 1 1 1 Light stabilizer SANOL LS-770 1 1 1 1 1 1 1 1 1 1 1 1 Light stabilizer SANOL LS-770 1 1 1 1 1 1 1 1 1 1 1 1 1 Light stabilizer SANOL LS-770 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Light stabilizer SANOL LS-770 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Light stabilizer SANOL LS-770 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Light stabilizer SANOL LS-770 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Light stabilize
  • Each curable composition prepared as above was charged in a prepared mold having a thickness of 3 mm so as not to form air bubbles therein and the surface was flattened with a spatula.
  • the composition was cured under conditions of 23°C and 50%RH, and the surface condition thereof was checked every predetermined days.
  • Each curable composition was charged in a mold having a thickness of about 5 mm, and the surface was flattened.
  • the time point at which the surface of the charged composition was flattened was defined as the start time of curing.
  • the surface of the composition was touched by a microspatula from time to time, and the time period required for the composition to no longer stick to the microspatula (regarded as skinning time) was determined.
  • the skinning time was measured under conditions of 23°C and 50%RH.
  • the same sample as used for evaluating the surface curing rate was placed under conditions of 23°C and 50%RH and the surface of the cured product was touched with a finger after 1 day and 7 days to evaluate the stickiness.
  • the stickiness was evaluated on a scale of one to eight, excellent, very good, good, satisfactory, satisfactory low, poor, very poor, and failure, beginning with the condition of no stickiness (no stickiness at all was evaluated as "excellent; high stickiness was evaluated as "failure").
  • Each curable composition was charged in a 100-cc vessel under conditions of 23°C and 50%RH.
  • the viscosity at 1 rpm, 2 rpm, and 10 rpm was measured with use of a BS-type viscometer with a rotor No. 7 (produced by Tokimec, Inc.)
  • Each curable composition was charged in a polyethylene tube having a diameter of 12 mm so as not to form air bubbles therein under conditions of 23°C and 50%RH, and the surface was flattened with a spatula to provide a test sample. The sample was left under the same conditions for seven days and the cured surface thereof was peeled. After the uncured portion was removed completely, the thickness of the cured portion was calipered.
  • Each curable composition was charged into a polyethylene mold so as not to form air bubbles therein.
  • the charged composition was cured under conditions of 23°C and 50%RH for three days and then under conditions of 50°C for four days to provide a cured sheet having a thickness of 3 mm.
  • a No. 3 dumbbell-shaped specimen was punched out from the cured sheet and subjected to a tensile test under conditions of 23°C and 50%RH (tensile speed: 200 mm/min) so as to determine the 100% modulus, strength at break, and elongation at break.
  • curable compositions each containing a phosphorus compound having an aryl group and a melting point of 23°C or higher provided cured products having a fine appearance without any crystals formed on the surface.
  • a small amount of T-629 resulted in crystallization in 28 days.
  • this problem was solved by an increased amount of T-629. Accordingly, a fine appearance can be kept for a long time by using three parts by weight or more of the phosphorus compound having an aryl group for each 100 parts by weight of the component (A).
  • the same effect can be observed in the case of using an aluminum or lithium salt of T-629 or IRGAFOS 168 as a phosphorus compound having an aryl group and a melting point of 23°C or higher.
  • Table 2 shows the results in the cases of adding phosphorus compounds containing no aryl groups. As shown in Table 2, crystallization was found on the surface of the cured product at an early stage in each case.
  • Table 3 shows the evaluation results in the cases of adding phosphorus compounds each having an aryl group and a melting point of less than 23°C. Crystallization was found in each case. Further, the cases of adding Gel All MD and buformin hydrochloride were also evaluated and found that these substances had no positive effects.
  • Table 4 shows the results as to whether or not addition of a phosphorus compound having an aryl group and a melting point of 23°C or higher to a sealant including a silyl group-containing organic polymer affects other physical properties. As shown in Table 4, addition of a phosphorus compound having an aryl group and a melting point of 23°C or higher did not affect the curing rate, viscosity, and depth curability of a one-pack type curable composition and tensile properties of the cured product thereof while the addition suppressed the crystallization problem on the surface of the cured product.
  • the curable composition of the present invention may be used in applications such as pressure-sensitive adhesives; sealants for uses such as buildings, ships, automobiles, and roads; adhesives; impression materials; vibration-proof materials; damping materials; soundproof materials; expanded/foamed materials; coating compositions; and spray coatings. Since the cured product obtained by curing the curable composition of the present invention is excellent in flexibility and adhesiveness, it is more preferable to use the curable composition as a sealant or an adhesive among these applications.
  • the curable composition of the present invention may also be used in various applications such as electric and electronic part materials such as back-cover sealants for solar cells; electric insulating materials such as insulating cover materials for electric wires and cables; elastic adhesives; contact adhesives; spray sealants; crack repair materials; tiling adhesives; powder coating compositions; casting materials; rubber materials for medical use; pressure-sensitive adhesives for medical use; sealants for medical devices; food packaging materials; joint sealants for siding boards and other exterior materials; coating materials; primers; electromagnetic-wave-shielding conductive materials and thermally conductive materials; hot melt materials; potting agents for electrics and electronics; films; gaskets; various molding materials; rustproof and waterproof sealants for wired glass and laminated-glass edges (cut end faces); and liquid sealants for use in automotive parts, electrical machinery parts, various machinery parts, and the like.
  • electric and electronic part materials such as back-cover sealants for solar cells
  • electric insulating materials such as insulating cover materials for electric wires and cables
  • elastic adhesives such as
  • the curable composition may also be used as various sealing compositions and adhesive compositions as it, either alone or with the aid of a primer, can adhere to a wide range of substrates such as glass, ceramics, wood, metals, and resin moldings.
  • the curable composition of the present invention may also be used for interior panel adhesives, exterior panel adhesives, tiling adhesives, stone pitching adhesives, ceiling finishing adhesives, floor finishing adhesives, wall finishing adhesives, vehicle panel adhesives, adhesives for assembling electric, electronic and precision apparatuses, direct glazing sealants, double glazing sealants, sealants for SSG systems, and working joint sealants for buildings.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Sealing Material Composition (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Claims (15)

  1. Composition durcissable comprenant :
    (A) un polymère organique ayant un groupe silyle pouvant être réticulé par la formation d'une liaison siloxane ;
    (B) un acide carboxylique et/ou un sel carboxylate de métal ;
    (C) un composé aminé ayant deux groupes amino ou plus et aucun groupe silyle réactif dans une molécule ; et
    (D) un composé phosphoré ayant un groupe aryle et un point de fusion de 23 °C ou plus.
  2. Composition durcissable selon la revendication 1, dans laquelle une quantité d'un composé organostannique est inférieure à 0,02 % en poids de la composition.
  3. Composition durcissable selon la revendication 1 ou 2, dans laquelle le composé phosphoré (D) a deux groupes aryle ou plus.
  4. Composition durcissable selon l'une quelconque des revendications 1 à 3, dans laquelle le composé phosphoré (D) a un groupe aryle auquel un groupe t-butyle est lié.
  5. Composition durcissable selon l'une quelconque des revendications 1 à 4, dans laquelle le composé phosphoré (D) contient un atome de phosphore ayant un nombre d'oxydation de +3 ou +5.
  6. Composition durcissable selon l'une quelconque des revendications 1 à 5,
    dans laquelle le polymère organique (A) a, comme squelette de chaîne principale, au moins un polymère choisi dans le groupe constitué d'un polymère de polyoxyalkylène, d'un polymère d'hydrocarbure saturé, et d'un polymère d'ester (méth)acrylate.
  7. Composition durcissable selon la revendication 6,
    dans laquelle le polymère de polyoxyalkylène est un polymère de polyoxypropylène.
  8. Composition durcissable selon l'une quelconque des revendications 1 à 7,
    dans laquelle le polymère organique (A) présente un squelette de chaîne principale contenant un groupe représenté par la formule (1) :

            -NR1-C(=O)-     (1)

    dans laquelle R1 représente un atome d'hydrogène ou un groupe organique substitué ou non substitué.
  9. Composition durcissable selon l'une quelconque des revendications 1 à 8,
    dans laquelle le polymère organique (A) est un mélange d'un polymère de polyoxyalkylène et d'un polymère d'ester (méth)acrylate.
  10. Composition durcissable selon l'une quelconque des revendications 1 à 9,
    dans laquelle le composant (B) est (B-1) un acide carboxylique comprenant un atome de carbone quaternaire adjacent à un groupe carbonyle ; et/ou
    (B-2) un sel carboxylate de métal comprenant un atome de carbone quaternaire adjacent à un groupe carbonyle.
  11. Composition durcissable selon l'une quelconque des revendications 1 à 10,
    dans laquelle le sel carboxylate de métal (B-2) comprenant un atome de carbone quaternaire adjacent à un groupe carbonyle est un carboxylate d'étain.
  12. Composition durcissable selon l'une quelconque des revendications 1 à 11,
    dans laquelle le composé aminé (C) est une diamine.
  13. Composition durcissable selon l'une quelconque des revendications 1 à 12,
    dans laquelle le composé aminé (C) a un groupe amino primaire et un groupe amino tertiaire dans une molécule.
  14. Agent d'étanchéité monocomposant, adhésif monocomposant ou adhésif de finition de sol monocomposant qui comprend la composition durcissable selon l'une quelconque des revendications 1 à 13.
  15. Produit durci, qui est produit par durcissement de la composition durcissable selon l'une quelconque des revendications 1 à 14.
EP09816235.7A 2008-09-29 2009-09-28 Composition durcissable et produit durci obtenu à partir de celle-ci Active EP2341106B1 (fr)

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JPWO2010035820A1 (ja) 2012-02-23
JPWO2010035821A1 (ja) 2012-02-23
EP2338938B1 (fr) 2013-07-31
US8853309B2 (en) 2014-10-07
US20110237723A1 (en) 2011-09-29
CN102165016A (zh) 2011-08-24
EP2338938A1 (fr) 2011-06-29
US20110213058A1 (en) 2011-09-01
WO2010035821A1 (fr) 2010-04-01
EP2338938A4 (fr) 2012-05-09
EP2341106A1 (fr) 2011-07-06
JP5485902B2 (ja) 2014-05-07
EP2341106A4 (fr) 2012-05-09
JP5547641B2 (ja) 2014-07-16
US8680184B2 (en) 2014-03-25
CN102165016B (zh) 2014-03-12
WO2010035820A1 (fr) 2010-04-01

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